JPH0233458Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a float structure for a rice transplanter.

Conventionally, floats for rice transplanters have been formed with concave parts in several places on the entire bottom in order to reduce the resistance on the field water surface as much as possible and improve the straightness of the float, so the volume of the float has been minimized and sufficient buoyancy has been achieved. In addition, the concave groove formed at the rear end of the float had a constant groove depth, so the load of the main body was placed on the rear end of the float, making it difficult to perform the planting work smoothly. When the soil settled on the muddy soil surface, the grooves on the muddy soil surface became deep, causing the seedlings to shift in rows, making it difficult to perform precise planting work.

In this invention, the bottom surface of the float disposed below the rice transplanter main body is formed flat at the front and center, and a groove is formed at the center of the rear end, and the groove extends toward the rear edge of the float. By forming the groove with an upward slope at the rear so that the groove depth gradually increases,
It has sufficient buoyancy to allow for smooth planting work, and when the load of the main body is applied to the rear of the float and the rear end of the float sinks to the mud surface, the shallow grooves on the mud surface prevent the seedlings from shifting in rows. The present invention aims to provide a float structure for a rice transplanter that can perform precise planting work.

The embodiment of the present invention will be explained in detail based on the drawings.
A indicates a walking type rice transplanter, and this walking type rice transplanter A has a prime mover 2 mounted on the front part of the main body 1.
A running wheel 4 is disposed on the outer side of the rear end of the chain case 3 disposed on the left and right sides of the main body 1, and a center float 5 is disposed at the center of the lower side of the main body 1.
Side floats 6 are arranged on the left and right sides,
In addition, a seedling platform 7 with a low front and rear height is provided at the rear of the main body 1, and a planting claw 8 facing the lower end of the seedling platform 7 is provided.
In addition, a steering handle 9 is provided on the rear side of the seedling stand 7, and in wet fields, each float 5, 6, and 6 secures buoyancy for the main body 1, and the prime mover 2
The driving wheel 4 is driven by the power of , and the seedlings on the seedling stand 7 are planted in the wet field using the planting claws 8 while traveling through the wet field.

Each float 5, 6, 6 has a front end portion 10, a front portion 11, and a center portion 1 in order from the front end to the rear end.
2, a rear part 13, and a rear end part 14, and the center float 5 has a front part support 15 interposed between the front end part 10 and the lower part of the main body 1, and the rear part 13. A rear support body 17 is interposed between the front end portion 10 and a support frame 16 provided at the bottom of the steering handle 9, and a side float 6 is interposed between the front end portion 10 and the tip of a stay 18 protruding from the side of the chain case 3. The main body 11 is supported on each of the floats 5, 6, and 6 by interposing a front support 15 and a rear support 17 between the rear 13 and the support frame 16.

The center float 5 has a front end portion 10, a front portion 11,
The center part 12 is formed with approximately the same width up to the middle part, and the center part 12 is provided with a bulge part 19 formed in a dogleg shape outwardly on both sides at a rear position from the middle part, and the rear part 13 and the rear end part 14 are It is formed with substantially the same width, which is narrower than the above-mentioned width. The upper plate 20 of the center float 5 has a front end 10 formed to slope upward in the front end direction, and a Y-shaped concave portion 21 in the central portion 12 with a peripheral edge sloped downward inward. ing. Further, the bottom plate 22 of the center float 5 has a front end concave groove 23 at the front end 10.
A rear concave hole 24 is formed in the rear part 13, and a rear end concave groove 25 is formed in the rear end part 14, and the front part 11 and the central part 12 are flat without any concave part or the like. The volume of the float 5 is made as large as possible by forming the float 5, and it is configured to ensure greater buoyancy.

The bottom plate 22 of the center float 5 has a front end 10 that slopes upward toward the front end, and has a front end concave groove 23 formed at the center of the front end 10, and is flat on both sides. is forming. Further, the center of the front end 10 of the center float 5 is formed by the front end concave groove 23 as a single plate-shaped front connecting part 26 by the upper plate 20, and the connecting part 26 is connected to the connecting metal fitting of the front support 15. 15 can be connected to each other via bolts or the like. Further, the concave groove 23 is formed into a substantially U-shaped cross section with the width gradually decreasing upward, and the rear portion thereof is formed in a backward downward slope.

Further, in the rear part 13 of the bottom side plate 22, a rear concave hole 24 is formed in the center transmission, and both sides are formed flat. Through the rear concave hole 24, the rear part 13 of the center float 5 is formed as a monolithic rear connecting part 27 formed by the upper plate 20, and the connecting fitting 17' of the rear support body 17 is connected to the connecting part 27 with bolts or the like. It is configured so that it can be installed in series. Further, the rear concave hole 24 is formed with its peripheral edge facing upward and slanting upward inward to form a space in the shape of a substantially quadrangular truncated pyramid.

Furthermore, a rear end concave groove 25 is formed at the center of the rear end 14 of the bottom plate 22, and both sides are flat. The rear end concave groove 23 is formed by an inclined surface 29 having an upward slope backward from the rear end edge of the concave hole 24 toward the float rear end edge 28 of the rear end portion 14 .
8, the load of the main body 1 is applied to the rear part 13 of the center float 5, and the float 5 is tilted in a state of high front and low back, and the rear end 14 is in a wet field. When the vehicle sinks down to the mud surface, the inclined surface 29 of the rear end concave groove 25 becomes approximately parallel to the mud surface, and the groove mark on the mud surface becomes as shallow as possible. Further, the rear end edge of the inclined surface 29 is positioned at approximately the center height of the float rear end edge 28 of the center float 5, and the width of both sides of the inclined surface 29 is gradually widened downward, so that the rear end portion has a concave shape. The groove 25 is formed to have a substantially inverted U-shape in cross section.

Further, the side float 6 is formed to have substantially the same width as a whole except for forming a dogleg-shaped bulge 19 inside the center portion 12, and the bottom side plate 22 has the same structure as that of the center float 5. That is,
The front support 1 is connected to the front connecting portion 26 by the upper plate 20 formed in the front end concave groove 23 provided in the front end portion 10.
The rear connecting part 2 is configured so that the connecting fittings 15' of No. 5 can be connected to each other via bolts or the like, and the upper plate 20 is formed with a rear concave hole 24 provided in the rear part 13.
A connecting fitting 17' of the rear support body 17 can be connected to the rear end portion 14 via a bolt or the like.
When it sinks to the mud surface of a wet field, the concave groove 25 at the rear end
The inclined surface 29 is substantially parallel to the mud surface, and the groove marks on the mud surface are made as shallow as possible.

Note that the middle part of the rear support body 17 is the support frame 1
The floats 5, 6, and 6 are vertically adjusted by vertically adjusting the rear end lever 31, and the chain case 3 is rotatable up and down around the front part, so that the running wheels 4 can be rotated up and down. By configuring the main body 1 to be vertically adjustable, the vertical position of the main body 1 can be adjusted.

The embodiment of the present invention is constructed as described above, and the floats 5, 6, and 6 ensure a predetermined buoyancy for the main body 1, and the traveling wheels 4 drive the rice while traveling through wet fields. Seedlings are planted on the muddy soil surface of a wet field using attachment claws 8, and the bottom side plate 22 is connected to the front part 1.
1 and the central part 12 are formed flat, so the volume of each float 5, 6, 6 is as large as possible, ensuring greater buoyancy, and the groove depth of the rear end concave groove 25 can be reduced. Since the inclined surface 29 is provided so as to become larger toward the rear end edge 28 of the float,
When the load of the main body 1 is applied to the rear part 13 of the float and the rear end 14 of the float sinks to the mud surface, the inclined surface 29 becomes approximately parallel to the mud surface, and the groove marks on the mud surface become as shallow as possible. , it is possible to prevent the seedlings from shifting in the rows, and to enable precise planting work.

In addition, since the front connecting portion 26 and the rear connecting portion 27 have a single-piece structure using the upper plate 20, each float 5, 6, 6 can be attached to the front and rear supports 15, 17 using short bolts, etc. This can be done easily.

According to the present invention, the bottom surface of the float disposed below the main body of the rice transplanter is formed flat at the front and central portions, and a groove is formed at the center of the rear end, and the groove is formed at the rear edge of the float. Since the groove is formed in an upward slope toward the rear, the depth of the groove gradually increases, it retains sufficient buoyancy and allows for smooth planting work.
When the load of the main body was applied to the rear part of the float and the rear end of the float sank into the mud surface, the groove marks on the mud surface were shallow.
This layer has the effect of preventing seedlings from shifting in shape and allowing precise planting work to be performed.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of the embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a bottom view of the main parts, Fig. 4 is a - sectional view, Fig. 5 is a - sectional view, and Fig. 6 is a - sectional view. 7 is a sectional view, FIG. 8 is a sectional view, FIG. 9 is a sectional view, and FIG. 10 is a sectional view. A: Walking type rice transplanter, 1: Main body, 5: Center float, 6: Side float, 10: Front end, 1
1: Front part, 12: Center part, 13: Rear part, 14: Rear end part, 22: Bottom side plate, 25: Rear end concave groove, 2
8: Float rear end edge, 29: Inclined surface.

Claims (1)

[Scope of utility model registration request] The bottom surface of the float disposed below the rice transplanter main body 1 is formed so that the front part 11 and the central part 12 are flat, and a groove part is formed in the center of the rear end part 14, and the groove part is formed at the rear edge of the float. 28. The float structure of the rice transplanter is formed in an inclined shape with a rearward upward slope in which the depth of the groove gradually increases toward 28.